Valveless rotary pump.



P. LAMPLOUGH. l

VALVBLES'S ROTARY PUMP. APPLICATION FILED 00T. 21, 1910. 1,044, 1 95.Patented Nov. 12, 1912.

s SHEETS-SHEET 1.

:OLUMBIA PLANOGRAFH C0., WASHINGTON, D. \:A

` F. LAMPLOUGH.

VALVELESS ROTARY PUMP.

APPLICATION IILEDOUT. 2l, 1910.

Patented Nov. 12,1912. a sHEETssHBET 2.

coLUMIAA PLANOGRAPH C0.. WASHINGTON. D. c.

P. LAMPLOUGH.

VALVELESS ROTARY PUMP.

APPLICATION FILED 0011.21, 1910` Patented Nov. 12, 1912.

s'sHEETs-SHEBT 3.

mvrTEi) srA'rEs PATENT oEEicE.

FREDERICK LAMPLOUGH, OF LONDON, ENGLAND, ASSIGNOR T0 LAMPLOUGH AND SON,LIMITED, OF WILLESDEN JUNCTION, ENGLAND.

VALVELESS ROTARY PUMP.

Specification of Letters Patent.

Patented N0v.12,1912.

Application led October 21, 1910. Serial No. 588,274.

To oZZ whom it 'may concern:

Be it known that I, FREDERICK LAM- ILoUGI-r, a subject of the King ofGreat Britain, residing at London, England, have invented a new anduseful Valveless Rotary Pump, of which the following is a specification.

The invention has for its object an improved valveless rotary pumpconsisting of the novel arrangement and combination of parts hereinafterdescribed and represented in the accompanying drawings, in which Figurel is a vertical section through the pump body or casing on the line l-lof Fig. 3, showing some of the internal rotating parts in elevation.Fig. 2 is a vertical section on the line 2-2 of Fig. l, showing some ofthe rotating parts in elevation the nist-ons being omitted. Fig. 3 is asectional plan of the casing on the line 3-3 of Fig. 1. Fig. 4i is acentral vertical section of one of the pistons showing the arrangementof the packing pieces. Fig. 5 is an underside view of the upper endpacking piece. Fig. 6 is a horizontal section of one of the pistons, andFigs. 7 and 8 are respectively a side view and a vertical cross sectionof one of the eccentric rings with its pin for giving motion to apiston. Fig. 9 is an elevation of a central division wall carrying 'theguides for the pistons the end wall being omitted. Fig. l0 is a sectionon the line 10-10 of Fig. 9. Fig. 11 is an end elevation of the guidesfor the pistons showing the driving shaft in section. i

In carrying the invention into effect a cylindrical pump body or casinga is employed, which is provided with removable end covers ZJ, b, eachof which is formed with a bearing b2 or b3, the bearing b2 being closedat the outer end, while the bearing b3 is provided with a stuffing boxb4, as is well known.

c is the driving shaft, on which is formed or fixed a cylindricalrotating yoke or body Z which lits on its periphery the cylindricalportion of the pump body or casing and against the end covers b, b.rlhis rotating yoke or body cZ is formed with a central cylindricaldivision cZ and with end w'alls Z2 between which are formed spaces Z3 atright angles to each other and which are open at the ends and arebounded on each side of the axis with convex and concave slidingsurfaces d4, d5, struck from the same center.

The end walls cZ2 are riveted to the part Z as seen in Fig. l1. Therivet holes in the part cZ are seen in Figs. 9 and 10.

The driving shaft c projects from one of the end walls Z2 and passesthrough the bearing b3 and stuffing box b4, while a neck or trunnion cin the axial line of the driving shaft projects from the other end wallCZZand is carried by the bearing b2.

Within the spaces Z3 are fitted reciproeating pistons c having curvedsurfaces corresponding with and fitting against the surfaces d, d5. Eachpiston c near its periphery is litted with a bush or sleeve c', one endof which projects on one side of the piston.

Within each end cover is formed an eccentric ring-shaped housing f,within which is fitted a rotating ring g, and each of said rings isformed or fitted with a pin g fitting within the bush or sleeve c of oneof the pistons c. Each end cover ZJ, ZJ', is fitted at b5 with alubricator, not shown, which lubricators supply oil to the rotatingrings g, the pins g4 and the bearings b2, b3, in said end covers.

The pistons e are fitted on the center lines of their flat and curvedbearing surfaces with packing pieces zf, ZL, iitting in'suitable spacesand pressed outward respectively by springs 7b2, V71,3.

Each inlet and outlet passage a is divided by a tapered division a2extending from the cylindrical body a to a suitable distance.

The pump is reversible and one passage a is the inlet when the shaft cis driven in one direction, and the other passage a is the inlet whenthe shaft c is driven in the other direction. Whichever passage a is theinlet, the other passage c is the outlet.

The working of the pump above described is as follows :-As the yoke orbody Z is rotated, the pistons c rotate with it and in additionreciprocating motion is imparted to the two pistons c guided by thecurved faces cZt, (Z5. The lreciprocating motion is imparted by means ofthe pins g on the rings g entering the bushes or sleeves c. Each endwisemovement of each piston c produces a suction and a delivery stroke, thesuction taking place at one end of the piston and the delivery at theother end of the piston. The suction and delivery parts a coincide atone part of the rotation of the yoke cZ with the openings in theperiphery of the Y bodyfixed on the driving rthe pump casing,

yoke or body Z as shown in Fig. l. At each end of the stroke of thepiston the yoke al will close the suction and delivery ports; at thatpoint the action of the piston is reversed, that is to say, the end ofthe piston which has just completed the delivery at the delivery portwill commence drawing in a fresh charge of water from the suction portand the end of the piston which has produced the suction at the suctionport will at the same moment commence delivery at the delivery port. Asthere are two pistons a quadruple action is obtained which is equivalentto a pair of double acting pumps with four suction and four deliveryvalves, that is to say, at every half revolution of the improved pumptwo suctions and two deliveries will take place. If desired a pump maybe arranged in a similar manner to the above but having only one pistone. In this case only a Y single eccentrically mounted ring g carrying apin g operates the piston e and the central division d of the yoke orbody cl is dispensed with as it is unnecessary.

What I claim is 1. In a valveless rotary pump having a cylindrical bodyor casing, an inlet and an outlet passage on opposite sides of saidcasing, removable end covers to the casing, a bearing closed at theouter end on one end cover, an open ended bearing fitted with a stufiingbox on t-he other end cover and a driving shaft mounted in saidbearings, the combination therewith of a rotating yoke or shaft andfitting Within the cylindrical portion and ends of a piston housingspace having two curved and two f'lat faces in said yoke or body, thecurved faces to said space being struck from the same center, a curvedpiston fitting and .sliding within said space, an eccentric ring shapedhousing on the inner side of each end cover, a. rotating pistonoperating ring wit-hin said housing and a pin formed integral with saidring fitting a sleeve on the piston.

2. In a valveless rotary pump having a cylindrical body or easing, aninlet and an outlet passage on opposite sides of said casing, removableend covers to the casing, a bearing closed at the outer end on one endcover, an open ended bearing fitted with a stuffing box on the other endcover aud a driving shaft mounted in said bearings, the combinationtherewith of a rotating yoke o1` body fixed on the driving shaft andfitting within the cylindrical portion and ends of the pump casing, acentral cylindrical division in the yoke or body, cylindrical end wallsto said yoke or body, two piston housing spaces at right angles to eachother between the central division and the end walls of the rotatingyoke or body, curved faces to said spaces struck from the samecenter,curved pistons fitting and sliding within said spaces, an eccentric ringshaped housing on the inner side of each end cover, rotating pistonoperating rings fitting within said housings, and a pin formed integralwith each of said rings fitting a sleeve on each of the pistons.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

FREDERICK LAMPLOUGH.

Vitnesses RIPLEY VVILsoN, WM. GIRLING.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

